Development of a toolbox for electrocardiogram-based interpretation of atrial fibrillation

Picture of the AF-Toolbox. The calculating part of the AF-Toolbox is programmed in C (DLL, or dynamic link library); for research and development phase, Matlab was used as GUI (graphic user interface) and will be replaced by the ECG machine's corresponding GUI. This is a typical AF case.

A, A clinical 10-second ECG signal on V2, where P waves were removed. B, ECG signal obtained by the addition of ventricle activity (VA) ECG signal (A) and AA signal (C). C, Original 10-second ECG simulated AA on V2. D, Estimated AA with the AF-Toolbox after applying the same high-pass filter. E, Original AA of amplified 4 times (C). F, Estimated AA of amplified 4 times (D); NMSE of 0.21 during the QRS complexes and of 0.17 during the JQ intervals.